John stock



UNITED STATES PATENT OEETCE.

JOHN STOCK, OF NEIV YORK, N. Y.

PHOTOGRAPHIC CAMERA.

Specification forming part of Letters Patent No. 412.97 l, dated May 3l,1864.

To all whom it may concern,.-

Be it known that I, JOHN STOCK, ot' New York, in the county and State ofNew York, have invented a new and Improved Photographic Camera; and I dohereby declare that the following is a full and exact descriptionthereof', reierence being had to the accompanying drawings, and to theletters of reference marked thereon.

'Ihe nature of my invention consists, first, in the arrangement andconstruction of the vitried or similar corners in the plate holder,whereby the fitting of the same is very much simplified and a greateraccuracy in their position is obtained; secondly, in the arrangement ofhanging the plate-holder and the manner of moving the same for thepurpose of taking two or more pictures; thirdly, in the arrangement of amovable front plate, on which the lenses are attached, for the purposeof regulating the lenses, so as to get the picture in proper line.

Figure I represents a cross-section of my improved camera. Fig. 1I showsa top view ot' the same, and Fig. III is an end view with the door ofthe plate-holder removed. The other gures represent differentarrangements hereinafter refe red to.

Similar letters represent similar parts in all the Iigures.

In the accompanying drawings, A represents the camera. B is the frontplate ot' the same, to which the lenses (not shown in the drawing) areattached. (l is the plate-holder. This plate-holder is recessed at thetop back part, against which a spring, a, fastened to the top of thecamera, is made to bear. Another spring m, is made to bear against thebottom part of said plate-holder, which, together with the spring a,press said plate-holder against the camera, allowing at the same timethe plate-holder to slide backward and forward at the end of saidcamera. On the top ot' the plate-holder C a projecting ledge, a, isfastened, by which this plate-holder is hung onto the camera. Ahook-piece, w, fast to the top of the camera, passes over thisprojecting ledge a, and fits into the recessed part, to assist theholding on of the plate-holder. By this arrangement of hanging theplate-holder C upon the camera, the bottom of said plateholder is keptclear of the trough D, which receives the drippings. The projectingledge a is provided with notches l 2 2, into which a'spring catch, d, ismade to catch, so as to hold the plate holder in its desired positionwhen the same is moved so as to take several pictures one after theother. A small lever, g, acting against the under side oi the catch d,forces said catch out of the notch when required. The vitried corners EI'l are made with circular ends or projections, S, and may have eithertwo such projections, S, as shown on the corners F, or the same may bemade with three circular projections, as shown at E, according to theirsize. By this construction of the vitritied or similar corners thetitting of the same into the wooden plate-holder frame is muchsimplified, and is much easier done, insuring at the saine time greateraccuracy and more solidity.

The front plate, B, against which the lenses are fastened, is at the tophinged to the camera-box. At its bottom cnd an angular piece, p, isfastened on, through which a screw-pin, 0, passes, working in a suitablenut, fastened in the camera-box. By this arrangement the face of thisfront plate, B, and consequent-- ly ofthe lenses, may be varied, so asto bring the object in proper line, improving thereby the pictureconsiderably. On the inside of this front plate, B, a plate, N, isattached with suflicient opening in the center, so as not to obstructthe view, and projecting some distance all around the outer edges of theplate B. A corresponding plate or frame, M, is attached to the innersides ot' the camera-box, projecting some distanceiuward past the outeredges of the plate or frame N. By this arrangement the entrance ot'light into the camera-box A is prevented when the front plate, B, ismoved either inward or outward.

Instead of hinging the front plate, B, at its upper end, as shown inFig. I, the same may be centered near the middle, as shown in Fig. IV,so as to turn on a horizontal axis or point, 7c, arranged near thecenterof the front plate, B.

Instead of arranging the screw-pin o as represented in Fig. I, wheresaid pin is operated at the front of the camera, this pin may be placedat the bottom ofthe camera-box, or pass through the bottom plate, asrepresented in Fig. IV, so as to be able to regulate the position andinclination of the front plate behind the machine, where the operatorusually stands.

Instead of hinging the front plate, B, at its top to the camera,asrepresented in Fig. I, or of fastening the saine so as to turn near itsmiddle on a horizontal axis or point, as shown in Fig. IV, the same maybe secured to the camera by four screw-pins, o', passing' throughsuitable angular pieces IL fast to the front plate, B, and Working' insuitable nuts r, fastened into the camera-box, as represented in Figs.V,VI where Fi g.V represents a cross-section and Fig. VI an end view.By this arrangement the surface of the front plate, B, and consequentlyof the lenses attached thereto, may be regulated in any desireddirection. Instead of the plates N and M, (shown in Figs. I and 1V,) anangular frame, t, may in that case be fastened on the inside ot' thecamera-boX, andan elastic or adjustable substance,

vG, be placed against this frame t and the inside ot' the face-plate B,which Will allow of any desired motion of said face-plate, and at thesame time exclude the entrance ot' light to the inside of the `camerawhen the plate B is moved inward or outward at either side.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. The construction ot" the corners, whether vitried or of othermaterial, with circular projections S, in the manner and for the purposesubstantially set forth.

2. The construction of the plate-holder C,

with projecting ledge a, and also the plateholder C and projecting`ledge a., in combination with the hoolr te, spring-catch d, and lever g,said springcatch d Working in suitable division notches or holes made inthe ledge a., when combined and operating in the manner described.

3. The arrangement and use of the movable front plate, B, constructed asdescribed.

et. In combination with a movable front plate, the arrangement of theplates or frames M and N, or their equivalent-acting in the manner andfor the purpose described.

5. Hinging the front plate, B, to the camera, irrespective ofthe kindand mode of hinging, for the purpose substantially as set forth.

6. Hoving the front pla-te, B, by means of a bolt, o, or its equivalent,Whether passing from the t'ront to the back or from the back to thefront ofthe camerabox, as described.

7. 'llie overhanging spring n, attached to the top of the cameraboX, andacting against the back part of the plate-holder, in the manner and forthe purpose specied.

8. Holding and moving the front plate by means ot one or more screws,substantially as described and set forth.

JOHN STOCK.

Witnesses:

HENRY E. RAEDER, J noon STOCK.

